Tuesday was the hottest day on Earth since at least 1979, with the global average temperature reaching 62.92 degrees Fahrenheit (17.18 degrees Celsius), according to data from the U.S. National Centers for Environmental Prediction.
In the United States, 57 million people were exposed to dangerous heat on Tuesday, according to The Washington Post’s extreme heat tracker. At the same time, China was gripped by a sizzling heat wave, the Antarctic is hotter than usual during its winter, and temperatures in the north of Africa reached 122F, Reuters reported.
Tuesday’s global average temperature was calculated by a model that uses data from weather stations, ships, ocean buoys and satellites, Paulo Ceppi, a climate scientist at London’s Grantham Institute, explained in an email Wednesday. This modeling system has been used to estimate daily average temperatures starting in 1979.
“This is our ‘best guess’ of what the surface temperature at each point on earth was yesterday,” he said.
